Favorite dark purple?

I'm working on my first order, and you all helped so much with figuring out which light purple to get. I want to get a super dark purple too, but again, it's so hard to figure out which one!

I want it to be very dark, but still look purple in indoor lighting, but not look too grape outside. Maybe I'm looking for a unicorn.

I'm ok with either red or blue leaning. I just don't want it to look black most of the time.